A proposal of a method to manage data quality for real-time databases

摘要

In this paper, we describe 2 extensions of Multi-level Virtual Deadline of Updates(MVDU) which we proposed before. First, we show the policy of MVDU for multi-sensors and multi-clients. Our policy prevents temporal consistency constraint violations and quickly responses to real-time constraint violations. Second, we propose the lazy 8ynchrnnization architecture which collectively transmits sensor updates into storage. And we compare the architecture with conventional one. The experimental result shows the superiority of our proposal.